Does a form 1 need the caliber or can N/A be used? UPDATE

[mg81]

Has anyone tired to not specify the caliber, but instead put in N/A like is done with the length?

Does ATF care about the caliber if they don't care about the length as long as the silencer is properly marked and serial numbered?

I would like to send in a few form 1's while there is a sheriff in office who is helpful and willing to sign, but I am not sure what I will want my future projects to be.

If you have to list something, how broad can you be? One of mine is 9mm, .44, .45 on the same form. Could I put on .17 caliber and the fact that the hole is big enough for a .50 bmg be fine. "Because I am a cautious builder who does not trust my alignment abilities."

Certainly more than one can listed as 9mm has a hole big enough for a .45 if the alignment is good.

[Diomed]

Does ATF care about the caliber if they don't care about the length as long as the silencer is properly marked and serial numbered?

Yes, they care. They need to know the length and the caliber so they can know if you've changed it, which they do not like happening.

[mg81]

Please correct me if I am wrong or if some rule has changed, but I have read on many posts on this site that for a form 1 silencer you don't have to list a specific length, just N/A.

[257speed]

you do not need to put the length, but it does have to have the caliber

[gvotuc]

How do you get around this if they don't know what length it WAS ?

"Increasing the length of the outer tube significantly affects the performance of the silencer and results in the "making" of a new silencer."

[flip]

My first form 1 went through with no length. My thinking is how can you measure something you were not supposed to have made yet. Could be a trap, you specify 6" OAL and it ends up being 6.125" could they say you made a different can and you be in violation? I think they give from 1ers a little more lattitude on manufacturing, but what keeps someone from making several cans and using the serial # they submitted on the F1? OR making several SBR lowers and using 1 S/N for all of them (taking into account the lowers were not serialized to begin with)

[<Mach1]

Not to rain on anyone's parade but for a moment I'm going to be the Devil's Advocate & call the ATF:

Me; Good afternoon, I was calling to see if it's necessary to specify an overall length on my F1 for a silencer build.
ATF; Let me make sure I understand this. It's your design & your not sure how long it's going to be?
Me; Well, yeah. I really not sure how long it's going to end up being.
ATF; Mmm, let me check with the section chief about this. Please hold...
Brief pause
ATF; Sir, I've been advised you are free to submit the form as you please. Upon receipt it will be logged, reviewed & processed accordingly.

[L1A1Rocker]

I have three form 1's without the length being filled in. My first one I did call the ATF and asked what needed to be filled in and what did not. The lady did tell me that the length was for sbr's and sbs's and not for suppressors. Now that was back around 1998 or so and I know things at ATF tend to change. . . Hope it has not changed cause I sent in a Form 1 last month without the length filled in.

[renegade]

I have three form 1's without the length being filled in. My first one I did call the ATF and asked what needed to be filled in and what did not. The lady did tell me that the length was for sbr's and sbs's and not for suppressors. Now that was back around 1998 or so and I know things at ATF tend to change. . . Hope it has not changed cause I sent in a Form 1 last month without the length filled in.

Hmm. That is quite a few and suggests it was not an oversight.

[dvanncvann]

I also have three that were approved with n/a as the length.

[mg81]

I was pretty sure that putting N/A for the length was and is still fine, I have seen many threads on the N/A for length question in this forum.

I wanted to know if anyone had actually tried to put N/A for the caliber. I don't want to sound like a jerk, it is just when it comes to ATF questions there are a lot of "my dealer told me" and "my brother-in law's cousin told me" answers.

I just did not want to waste the time to send a form 1 in filled out with N/A for both length and caliber if it has already been tried. If not, I will give it a try.

[ranb]

Eight forms approved without length filled in so far. As my silencers rarely come off of the lathe looking exactly like what I had on paper when the ATF form is submitted, I will continue to leave that block as N/A unless a length is required to be specified in the future.

Ranb

[gvotuc]

I would submit.. They may have just come to their senses.

This was just posted for a rejected Form 1 can application due to N/A in OAL section.


viewtopic.php?t=54943

[L1A1Rocker]

I would submit.. They may have just come to their senses.

This was just posted for a rejected Form 1 can application due to N/A in OAL section.


viewtopic.php?t=54943

This may be new. I will post on wheather my Form 1 gets "errored" that I sent in last month without the length being submitted.

[ranb]

I have a form 1 pending since 12/18/2009 with length as N/A. Will let you all know.

Ranb

[mg81]

Ranb, three months for a form 1, has that generally been your experience?

[ranb]

They have all taken 3-6 months.

Ranb

[L1A1Rocker]

I would submit.. They may have just come to their senses.

This was just posted for a rejected Form 1 can application due to N/A in OAL section.


viewtopic.php?t=54943

This may be new. I will post on wheather my Form 1 gets "errored" that I sent in last month without the length being submitted.

Got it today. It was approved.

[Fritcat]

OK, what about caliber?

[L1A1Rocker]

OK, what about caliber?

I have an approved Form 1 with .308/8mm in the calibier box.

[CrossfireRacerx]

what should I put if I plan to use it on .22lr, .22 mag, .17hmr, and .17hm2? Just put all 4?

[Bowen1911]

.22

[killerone]

can you mark as multi caliber? some form 4's I have seen have had this such as sear packs

[mx201er]

IIRC somebody on here had one denied for putting multiple calibers? I just put the biggest caliber on mine, It was for a .22 but Its used most on my .17hmr.
I put .22 on the form, the batf does not regulate what firearms you can put it on, just the building specs. I suppose they want to know the caliber just so you can't bore it out in the future to use on a bigger rifle, just like they want a length so they can make sure you don't make it longer in the future.
As for how much bigger or smaller the hole can be than listed I am no help.. would be good to know though!

[Diomed]

can you mark as multi caliber? some form 4's I have seen have had this such as sear packs

You must pick a caliber and engrave the tube with that caliber.

Write that caliber on the registration form.